/*
 * Copyright 2025 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.cloud.ai.manus.model.entity;

import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import jakarta.persistence.AttributeConverter;
import jakarta.persistence.Converter;

import java.util.HashMap;
import java.util.Map;

/**
 * @author dahua
 * @since 2025/7/12 13:02
 */
@Converter
public class MapToStringConverter implements AttributeConverter<Map<String, String>, String> {

    private final ObjectMapper objectMapper;

    public MapToStringConverter(ObjectMapper objectMapper) {
        this.objectMapper = objectMapper;
    }

    @Override
    public String convertToDatabaseColumn(Map<String, String> attribute) {
        try {
            return objectMapper.writeValueAsString(attribute);
        } catch (Exception e) {
            throw new IllegalArgumentException("Error converting map to string", e);
        }
    }

    @Override
    public Map<String, String> convertToEntityAttribute(String dbData) {
        // Add null or empty string check
        if (dbData == null || dbData.isEmpty()) {
            // Return empty Map or null, depending on business logic
            return new HashMap<>();
        }
        try {
            return objectMapper.readValue(dbData, new TypeReference<>() {
            });
        } catch (Exception e) {
            throw new IllegalArgumentException("Error converting string to map", e);
        }
    }

}
